4. Call of Duty: Ghosts

Like it or not, Activision's Call of Duty franchise isn't going anywhere, and Call of Duty: Ghosts, the 10th offering in the series, will probably break sales records and flood the world with annoying television ads featuring B-list celebrities and rappers. But it will also define first-person shooters for the next-gen consoles and will probably dominate the online multiplayer world for months after its release.